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SIR MARC ISAMBARD BRUNEL (1769-1849)

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Originally appearing in Volume V04, Page 683 of the 1911 Encyclopedia Britannica.
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SIR MARC ISAMBARD See also:BRUNEL (1769-1849)  , See also:British inventor and engineer, was See also:born at Hacqueville in See also:Normandy on the 25th of See also:April 1769 . His See also:father, a small landowner and See also:farmer, intended him for the See also:church, but his See also:taste for See also:mathematics and See also:mechanics inclined him to another career, and he obtained a nomination for the See also:navy, in which he served for six years . When his See also:ship was paid off in 1792 and he returned to See also:France, he found the Revolution at its height, and owing to his pronounced royalist opinions he was obliged to leave the See also:country . Reaching New See also:York in See also:September 1793 he began to practise as an architect and See also:civil engineer . His first employment was in See also:land-See also:surveying and See also:canal-See also:engineering . Later he submitted a highly ornamental See also:design for the See also:National Capitol at See also:Washington, which, however, was not accepted, and was engaged to design and superintend the construction of the Bowery See also:theatre, New York, burnt down in 1821 . He fitted novel and ingenious machinery in the See also:arsenal and See also:cannon factory which he was commissioned to erect in New York, and he was asked to See also:supply plans for the defences of the Narrows between the upper and See also:lower bays of that See also:port . See also:Early in 1799 he sailed for See also:England in See also:order to submit to the British See also:government his plans for the See also:mechanical See also:production of See also:ships' blocks, in substitution for the See also:manual processes then employed . After the usual difficulties and delays his proposals were adopted, largely through the recommendation of See also:Sir See also:Samuel See also:Bentham, and about 1803 the erection of his See also:machines was begun at See also:Portsmouth dockyard . They were constructed by See also:Henry Maudslay, and formed one of the earliest examples of a See also:complete range of See also:machine tools, each performing its See also:part in a See also:long See also:series of operations . Not only was the quality of the product much improved but the cost was greatly diminished, and the saving effected in the first See also:year in which the machines were in full See also:work was estimated at £24,000, of which about two-thirds was awarded to See also:Brunel . A little later he was occupied in devising improved machines for sawing and bending See also:timber, and in 18r1 and 1812 he was employed by the government in erecting saw-See also:mills at See also:Woolwich and See also:Chatham, carrying out at the latter dockyard a complete reorganization of the See also:system for handling timber .

About 1812 he devised machinery for making boots which was adopted for the purposes of the See also:

army, but abandoned a few years later when, owing to the cessation of See also:war, the demand became less and the supply of manual labour cheaper . At the same See also:time he interested himself in the See also:establishment of See also:steam See also:navigation on the See also:Thames between See also:London and See also:Ramsgate . In 1814 he succeeded in persuading the See also:admiralty to try steam-tugs for towing warships out to See also:sea . The experiments were made at his own expense, for a few months after undertaking to contribute to the cost the admiralty revoked its promise on the ground that the See also:attempt was " too chimerical to be seriously entertained." Another vain enter-prise on which he wasted much time and See also:money was an attempt to use liquefied gases as a source of See also:motive See also:power . His See also:round See also:stocking-See also:frame or tricoteur was patented in 1816, and among his other inventions were machines for winding See also:cotton-See also:thread into balls, for copying drawings, for making small wooden boxes such as are used by druggists, and for the manufacture of nails, together with processes of preparing tinfoil for decorative purposes and improvements in stereotype plates for See also:printing . In 1821, partly as the result of the damage done by See also:fire in 1814 to the saw-mills he owned at See also:Battersea, and partly because his commercial abilities were far from equal to his mechanical See also:genius, he got into See also:financial difficulties and was thrown into See also:prison for See also:debt, only regaining his freedom through a See also:grant of £5000 which his See also:friends obtained for him from the government . Subsequently his See also:attention was mainly devoted to projects of civil engineering, the most noteworthy being the Thames See also:Tunnel . In 182o he had prepared plans of See also:bridges for erection in See also:Rouen and St See also:Petersburg and in the See also:island of See also:Bourbon . In 1823 he designed See also:swing-bridges, and in 1826 floating landing-stages, for the port of See also:Liverpool . A See also:company, which was supported by the See also:duke of See also:Wellington, was formed in 1824 to carry out his See also:scheme for See also:boring a tunnel under the Thames between Wapping and Rotherhithe . The work was begun at the beginning of 1825, the excavation being accomplished by the aid of a "See also:shield," which he had patented in 1818 . Many difficulties were en-countered .

The See also:

river See also:broke through the roof of the tunnel in 1827, and after a second irruption in 1828 work was discontinued for lack of funds . Seven years later it was resumed with the aid of money advanced by the government, and after three more irruptions the tunnel was completed and opened in 1843 . Aided by his son, Brunel displayed extraordinary skill and resource in the various emergencies with which he had to See also:deal, but the anxiety broke down his See also:health . He recovered sufficiently from one paralytic stroke to attend the opening ceremony, but he was able to undertake little more professional work . A second stroke followed in 1845, and four years later he died in London on the 12th of See also:December 1849 . He received the order of the See also:Legion of See also:Honour in 1829 and was knighted in 1841 . See See also:Richard Beamish, See also:Memoirs of Sir Marc Isambard Brunel (1862) .

End of Article: SIR MARC ISAMBARD BRUNEL (1769-1849)
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